question_answer 50)

  A long tree has several branches. The tissue that helps in the sideways conduction of water in the branches is (a) collenchyma              (b) xylem parenchyma    (c) parenchyma              (c) xylem vessels

Answer:

  (d) Xylem vessels are very long tube-like structures formed by a row of cells placed end to end. The transverse wails between these cells are partially or completely dissolved to form continous water channels.